Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

46) The automobile radiator is a heat exchanger of

Answer is:

cross flow type

47) In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.

Answer is:

Right

48) A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

Answer is:

4 kW

Explanation:

(COP)h + (COP)r = 1
therefore,
(COP)r = 4 (COP)r = R.E / W_in
R .E = (COP)r * W_in = 4 kW

49) The curved lines on a psychrometric chart indicates

Answer is:

relative humidity

50) During humidification process, __________ increases.

Answer is:

relative humidity

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